H8SLASH3028F datasheet(553/923 Pages) RENESAS

553 / 923 page

Rev. 2.00, 09/03, page 523 of 890

5. If the transmitting device does not receive an error signal, it proceeds to transmit the next data

frame. If it receives an error signal, however, it returns to step 2 and transmits the same data

again.

14.3.4

Table 14.3 shows a bit map of the registers used in the smart card interface. Bits indicated as 0 or

1 must be set to the value shown. The setting of other bits is described in this section.

Table 14.3 Smart Card Interface Register Settings

Bit

1 Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

SMR

H'FFFB0

CKS1

CKS0

BRR

H'FFFB1

BRR7

BRR6

BRR5

BRR4

BRR3

BRR2

BRR1

BRR0

SCR

H'FFFB2

TIE

RIE

CKE1*

CKE0

TDR

H'FFFB3

TDR7

TDR6

TDR5

TDR4

TDR3

TDR2

TDR1

TDR0

SSR

H'FFFB4

TDRE

RDRF

ORER

ERS

PER

TEND

RDR

H'FFFB5

RDR7

RDR6

RDR5

RDR4

RDR3

RDR2

RDR1

RDR0

SCMR

H'FFFB6

—

SDIR

SINV

—

SMIF

Notes: — Unused bit.

1. Lower 20 bits of the address in advanced mode.

2. When GM is cleared to 0 in SMR, the CKE1 bit must also be cleared to 0.

Serial Mode Register (SMR) Settings: Clear the GM bit to 0 when using the normal smart card

interface mode, or set to 1 when using GSM mode. Clear the O/

E bit to 0 if the smart card is of the

direct convention type, or set to 1 if of the inverse convention type.

Bits CKS1 and CKS0 select the clock source of the built-in baud rate generator. See section

14.3.5, Clock.

Bit Rate Register (BRR) Settings: BRR is used to set the bit rate. See section 14.3.5, Clock, for

the method of calculating the value to be set.

Serial Control Register (SCR) Settings: The TIE, RIE, TE, and RE bits have their normal serial

communication functions. See section 13, Serial Communication Interface, for details. The CKE1

and CKE0 bits specify clock output. To disable clock output, clear these bits to 00; to enable clock

output, set these bits to 01. Clock output is not performed when the GM bit is set to 1 in SMR.

Clock output can also be fixed low or high.

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